449990679 has 4 divisors (see below), whose sum is σ = 599987576. Its totient is φ = 299993784.

The previous prime is 449990669. The next prime is 449990701. The reversal of 449990679 is 976099944.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 449990679 - 2⁵ = 449990647 is a prime.

It is a super-2 number, since 2×449990679² = 404983222373762082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449990609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74998444 + ... + 74998449.

It is an arithmetic number, because the mean of its divisors is an integer number (149996894).

Almost surely, 2^449990679 is an apocalyptic number.

449990679 is a deficient number, since it is larger than the sum of its proper divisors (149996897).

449990679 is a wasteful number, since it uses less digits than its factorization.

449990679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149996896.

The product of its (nonzero) digits is 4408992, while the sum is 57.

The square root of 449990679 is about 21212.9837363818. The cubic root of 449990679 is about 766.3041414161.

The spelling of 449990679 in words is "four hundred forty-nine million, nine hundred ninety thousand, six hundred seventy-nine".